Zobrazeno 1 - 10
of 29
pro vyhledávání: '"J. L. M. van Mechelen"'
Autor:
J. L. M. van Mechelen
Publikováno v:
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We report on a method to determine the dry thickness of a drying coating, probed in an arbitrary wet state using THz spectroscopy. Hereto, we successfully model the drying coating as an effective medium consisting of dry and wet regions. Our method p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39951b9025fa8bbc0b82855cfa256d2c
https://doi.org/10.1109/irmmw-thz.2018.8509847
https://doi.org/10.1109/irmmw-thz.2018.8509847
Autor:
J. L. M. van Mechelen
Publikováno v:
2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We show that the mechanism of structural arrest in colloidal dispersions can be revealed by the dielectric properties at THz frequencies. This opens ways to in situ study layered dispersions, which cannot be probed with existing techniques. This vivi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::526b086208688e49e8b6087b5ebaa5ca
https://doi.org/10.1109/irmmw-thz.2017.8067108
https://doi.org/10.1109/irmmw-thz.2017.8067108
Autor:
J. L. M. van Mechelen
Publikováno v:
Langmuir. 30:12748-12754
We present an optical study that reveals the bulk dynamics of the stratification process in drying colloidal dispersions. Terahertz time-domain spectroscopy has been used to measure in situ solventborne and waterborne paint layers as a function of dr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58a622b2c5738b640314accf61f3cad1
https://doi.org/10.1021/la503322v
https://doi.org/10.1021/la503322v
Publikováno v:
2016 IEEE SENSORS.
Terahertz radiation is used to sense multiple parameters in paper and cardboard sheets. The work advances from previous results by (i) using a stratified dispersive model approach to (ii) accurately determine caliper (sheet thickness), fiber orientat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6f5ae94356503cfe2b925d9b21cf225
https://doi.org/10.1109/icsens.2016.7808683
https://doi.org/10.1109/icsens.2016.7808683
Publikováno v:
2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
Using THz spectroscopy, we show how to uniquely determine parameters for industrial quality control of paper sheets. We carry out measurements within the industrial setting: no averaging, fast acquisition in ambient conditions, and quasi-real-time an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d5cd237c9cf206803e394f8468a90ac
https://doi.org/10.1109/irmmw-thz.2016.7758544
https://doi.org/10.1109/irmmw-thz.2016.7758544
Autor:
R.J. Westerwaal, J. L. M. van Mechelen, Herman Schreuders, W. Lohstroh, Bernard Dam, R.P. Griessen
Publikováno v:
Journal of Alloys and Compounds. 430:13-18
Mgy Ni ( 2 ≤ y ≤ 10 ) thin films covered with a Pd cap layer are hydrogenated in 1 0 5 Pa H2 between room temperature and 80 ° C and their dielectric function ɛ ˜ is determined from reflection and transmission measurements. The hydrogenated Mg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e8e54490380ddd9d626fe685dd2e42e
https://doi.org/10.1016/j.jallcom.2006.04.075
https://doi.org/10.1016/j.jallcom.2006.04.075
Autor:
J. L. M. van Mechelen, R.J. Westerwaal, Bernard Dam, R.P. Griessen, W. Lohstroh, A.C. Lokhorst
Publikováno v:
Journal of Alloys and Compounds, 404-406, 490-493. Elsevier BV
Lohstroh, W, Westerwaal, R J, Lokhorst, A C, van Mechelen, J L M, Dam, B & Griessen, R P 2005, ' Double layer formation in Mg-TM switchable mirrors (TM : Ni, Co, Fe) ', Journal of Alloys and Compounds, vol. 404-406, pp. 490-493 . https://doi.org/10.1016/j.jallcom.2004.11.127
Lohstroh, W, Westerwaal, R J, Lokhorst, A C, van Mechelen, J L M, Dam, B & Griessen, R P 2005, ' Double layer formation in Mg-TM switchable mirrors (TM : Ni, Co, Fe) ', Journal of Alloys and Compounds, vol. 404-406, pp. 490-493 . https://doi.org/10.1016/j.jallcom.2004.11.127
The optical properties of Mg–TM (TM: Ni, Co, Fe; Mg:TM ≈ 2) thin films during hydrogenation are investigated using reflection and transmission measurements. Mg–Ni and Mg–Co show an unusual behavior upon exposure to hydrogen. The nucleation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1805d852f2526ae112eb7200eba25e8c
https://hdl.handle.net/1871/31269
https://hdl.handle.net/1871/31269
Publikováno v:
2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
We propose a novel THz material analysis approach which consists of a combination of a stratified dispersive model, an appropriate measurement configuration and a time-domain based fitting procedure. The measurement configuration is modeled as a stra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbacc264ce2bb3ef1d9a1fa6ab5684bb
https://doi.org/10.1109/irmmw-thz.2014.6956335
https://doi.org/10.1109/irmmw-thz.2014.6956335
Publikováno v:
Optics letters, Vol. 39, No 13 (2014) P. 3853
We propose a novel THz material analysis approach which provides highly accurate material parameters and can be used for industrial quality control. The method treats the inspected material within its environment locally as a stratified system and de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f03cc87f857698f85c8a7cb2a22e7572
https://pubmed.ncbi.nlm.nih.gov/24978754
https://pubmed.ncbi.nlm.nih.gov/24978754
Autor:
Klaus Bohnert, Göran Eriksson, J. L. M. van Mechelen, Jan Czyzewski, Olivier Steiger, L. C. Rodoni, Stephan Wildermuth, Sergio V. Marchese
Publikováno v:
2013 IEEE Photonics Conference.
We present an electro-optic voltage sensor using bismuth germanate in a novel oil- and gas-free insulator. The performance is verified under varying external conditions. Accuracy within ±0.2% between -40°C and +80°C is demonstrated.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb11003066882dccfda7476ef30ef1b7
https://doi.org/10.1109/ipcon.2013.6656441
https://doi.org/10.1109/ipcon.2013.6656441